Copper sulfate

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

Copper sulfate

中文通用名

硫酸銅

IUPAC

copper(II) tetraoxosulfate
or
copper(2+) tetraoxosulfate
or
cupric sulfate

CAS

sulfuric acid copper(2+) salt (1:1)

CAS No.

7758-98-7

Molecular Formula

CuO₄S

Molecular Structure

General Product Information

Category

Herbicides > Inorganic herbicides
Fungicides > Copper fungicides
Algicides > Algicides
Molluscicides > Molluscicides

Activity

Herbicides, algicide, fungicide

Premix

Validamycin+Copper sulfate
Various crystal sizes: medium, large liquid, powder (snow) form, granular, water soluble. Premix Parters: copper oxychloride sulfur; cymoxanil; mancozeb.

Physical & Safety Data

Physical Properties

Molecular weight:249.7 (pentahydrate). Physical form: Blue crystals with no odor. Density:2.286 (15.6 °C); Melting point:147 °C (dehydrates); Vapour pressure: Non-volatile; Solubility:In water 148 (0 °C), 230.5 (25 °C), 335 (50 °C), 736 (100 °C) (all in g/kg). In methanol 156 g/l (18 °C). Practically insoluble in most other organic solvents. Soluble in glycerine to give an emerald green colour.; Stability:Slowly efflorescent in air. On heating, loses two molecules of water of crystallisation at 30 °C, two more molecules at 110 °C, and becomes anhydrous by 250 °C. By the reaction of alkalis on aqueous solutions, copper oxide is produced. Absorbs moisture readily when exposed to air. Phyton-27*: Thick greenish-brown liquid with pleasant odor.

Toxicology

Oral:Acute oral LD₅₀ difficult to determine, since oral intake leads to nausea.(Rat): Oral LD₅₀ 472 mg/kg. Percutaneous: Causes severe skin irritation.Corrosive to eyes. Inhalation:LC₅₀ for rats 1.48 mg/kg. Phytotoxicity: Phytotoxic to most plants when not mixed with lime to form Bordeaux mixture (q.v.).

Environmental Profile

Ecotoxicology: Bees:Toxic to bees.Birds:Less toxic to birds than to other animals. Lowest lethal dose for pigeons 1000 mg/kg, for ducks 600 mg/kg.Daphnia: EC₅₀ (14 d) 2.3 mg/l; NOEC 0.10 mg/l.Fish:Very toxic to fish.LC₅₀ 31 mg/l (rainbow trout). Environmental fate: Animals:Copper is an essential element and is under homeostatic control in mammals.Soil:Copper is strongly adsorbed to surfaces of minerals and organic matter, hence soil mobility is very low. In water, copper ions have a strong tendency to form complexes or to be adsorbed, followed by sedimentation. In the sediment, copper reacts with organPlant:Plants resist copper accumulation and translocation to stems, leaves or seeds. Most plants growing on soils containing up to 1000 ppm copper showed only slight elevation in copper content compared to plants grown in normal soils. WATER SOLUBILITY: 230.5 g/kg at 25° C.

Transport Information

Signal Word:DANGER; Hazard Class:Ib (Highly hazardous)